Spring-wheel.



PATENTED' APR. 2, 1907 J. PLIEGEL. SPRING WHEEL.

APPLICATION FILED DEC. 26. 1900 nvvfNT? W/ TA/[Ss W. a T n u Unrrnn'sra'rns PATENT @FEIQE JOSEF- FLIEGEL, or MALLMITZ, GERMANY.

SPRING -WHEE L.

Specification of Letters Patent.

. Patented A ril 2, 1907;

To all whom it inn/y concern;

Be it known that I, J osEF FLIEGEL, a subject of the German Emperor, anda resident of Sprottauer Chausse, Mallmitz, in the Empire of Germany,manufacturer, have invented new. and useful Improvements inSpring-Wheels, of which the following is a tangentially and support thesame yieldingly.

In this type of spring-wheel the hubobviously tends to assume aneccentric position incounteralcting the yielding capacity of the springsserving as buffers. Now in order t at for such eccentric movement thebufferbars of the opposite side may not exert their yielding actionbeyond the normal limit of the central position of the hub adjustablestops are provided for limiting the move-.

ment of the barsin' the yielding direction, whereas the counteractivemovement of the springs is also limited.

The invention can be carried out with three or several buiier-bars, andeach buffer-bar may be subject to the tension of one spring or a groupof springs.

Referring to the accompanying drawings, Figure 1 is a, verticalelevation of a wheel fitted with three buffer-bars in accordance withthe invention. Fig. 2 is a section on line A B,.and Fig. 3 is a detailof the adjustable stolp.

he rigid outerrim a is referably of U cross-section and is sufficient yreinforced by double-flanged extensions a, a a 'so as to form withoutspokes a resistible wheel-frame. The hub b, secured to the boss onjournalshank 0, forms with its periphery, made, preferably, of chilledsteel, the engaging surface for theb'uiier-bars'd, of which three areassumed in the form of construction shown in the drawings.

In connection with th1s arrange- The buffer-bars d engage or contact,Fig. 1, the hub b tangentially with straight abutments where they haveto ,counteract the. pressure of the hub tending to assume an cecentricosition and are plvoted at e on the rim (1, t us acting as levers. Thebars (1 are adapted to yield with sprin pressure directed to the centerof the whee by means of the s rings f. These springs are mounted onraially-arra ed spokes or supporting members 'i, whi are linked bypivotal connection at 7' to the rim a. Thes ring-pressure is taken u bythe transmitting members it, sockete with the su porting members i, the

heads k of the mem ers h being pivoted to the bars d at Z. In order thatthe said heads k ma move with the linked bars d only in the p ane'of theWheel and be deprived of any lateral-displacement, the hub b is rovidedat the front and rear sides of the w eel with-a pair of disks b b Theheads I: are slidable etween these parallel disks, thus allowing of theeccentric movement of the hub with respect to the rim 1..

An angular stop q with adjusting-screw p is attached to each buffer-bard and serves for limiting the inward stroke of the latter, the screw pabutting against the rim, as shown in Figs; 1 and 3.' The tension of thesprings f and theposition of the stop should be so regulated'that thehub for its normally relieved condition'is in the exact centralposition; The regulation by means of the ad justable stops 1) 9 enablesan accurate ad justment of the springs, as well as an.accurate centeringof the hub, and also attains the advantage that the bufler-b'arsare-prevented from making. a sur lus movement toward-the center, therebya ording free play for the hub, which while sliding on the buffer-bars(1 always tendsto assume the normal central osition. Finally the stopsrender each bufer-bar and each springf independent of the other springs,whereby the, full tension of each spljng will be utilized individuallfor supporting the hub without this indivi ual action eing afiectedbythe other springs as the movement is limited by their stops.

;The three drivers ,or con ling-arms m, whereby the rotary motion 0 thehub 12 is transmitted to the rim (1, in the direction of the arrow, Fig.1, engage with bolts or rollers n, which are arranged on thedouble-flanged extensions c a, a of the rim. Through the instrumentalityof the said drivers m a regular transmission of power of the hub to therim takes place, provided that the former is the driving member, thelatter beingstill capable. of eccentric displacement. Ihus in the eventof-jerks the hub counteracted by the respective spring will yield in adownward or possi' bly forward direction, While sliding along theabutments of the bufier-bars, and thus neutralizing the jerking effect.

Having now particularly described andascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim, and wish to secure by Letters Patent, is

1. In a spring-wheel the combination of a rigid rim, an inner hubcapable of eccentric movement relative to the said rim, a setofbuffer-bars pivotally connected with the outer rim and havingstraight-faced abutments which contact tangentially with the per pheryof the inner hub, a set of springs supporting yieldingly the saidbufienbars and means such as lateral hub-disks for hold ing thebuffer-bars and springs in the plane of the wheel-rim, substantially asdescribed and shown in the drawings.

2. In a spring-wheel the combination of a rigid rim, an inner hubcapable of eccentric movement relative to the said rim, a set of bufferbars pivotally connected with the outer rim and having straight-facedabutments which contact tangentially with the periphery of the innerhub, a set of springs supporting; yieldingly the said bufler-bars,adjustable stops for limiting the movement of the buffer-barsin aninward direction and means such as lateral hub-disks for holding thebufler-bars and springs in the plane of the wheel-rim, substantially asdescribed and shown in the drawings.

In witness whereof I have hereunto signed my'name, this 7th day ofDecember, 1906, in the presence of two subscribing witnesses.

, J OSEF FLIEGEL.

Witnesses:

HENRY HASPER, WOLDEMAR HAUPT:

